This Rwandan dictator formed the Rwanda Patriotic Front and ended the Hutu-inflicted genocide of nearly 1 million Tutsis.

Imagine that you have obtained spectra for several galaxies and have measured the observed wavelength of a hydrogen emission lin

Lerok [7]

Answer:

A. z (galaxy 1) = -0.00515, z (galaxy 2) = -0.01707, z (galaxy 3) = -0.04008

B. v (galaxy 1) = -0.00517c, v (galaxy 2) = -0.01707c, v (galaxy 3) = -0.0401c

C. d (galaxy 1) = -21 Mpc,d (galaxy 2) = -69.4 Mpc, d (galaxy 3) = -163 Mpc

Explanation:

We begin by listing out the parameters we were given:

λ (obsv) = 656.3 nm, λ (emit 1) = 659.7 nm, λ (emit 2) = 667.7 nm,

λ (emit 3) = 683.7 nm

A) Using the Redshift formula, we have:

z = [λ (obsv) - λ (emit)] ÷ λ (emit)

For galaxy 1:

z = [λ (obsv) - λ (emit 1)] ÷ λ (emit 1)

z = (656.3 - 659.7) ÷ 659.7 = -0.00515

z = -0.00515

For galaxy 2:

z = [λ (obsv) - λ (emit 2)] ÷ λ (emit 2)

z = (656.3 - 667.7) ÷ 667.7 = -0.01707

z = -0.01707

For galaxy 3:

z = [λ (obsv) - λ (emit 3)] ÷ λ (emit 3)

z = (656.3 - 683.7) ÷ 683.7 = -0.04008

z = -0.04008

B) Using the Doppler formula, we have:

(Δλ ÷ λ) = v ÷ c

v = c * (Δλ ÷ λ)

but, z = (Δλ ÷ λ)

⇒ v = c * z

speed of light (c) = 3 x $10^{8}$ m/s

For galaxy 1:

v = c * z

Substitute z into the equation calculated from A) above

v = 3 x $10^{8}$ * (-0.00515)

v = -1.55 x $10^{6}$ m/s

v = -0.00517c

For galaxy 2:

v = c * z

Substitute z into the equation calculated from A) above

v = 3 x $10^{8}$ * (-0.01707)

v = -5.12 x $10^{6}$ m/s

v = -0.01707c

For galaxy 3:

v = c * z

Substitute z into the equation calculated from A) above

v = 3 x $10^{8}$ * (-0.04008)

v = -12.03 x $10^{6}$ m/s

v = -0.0401c

N.B: the negative value of velocity connotes that the galaxies are moving away from us (not towards us)

C) Using Hubbleʹs law, we have:

v = H · d

where:

v = velocity of a galaxy (km/s), d = distance (Mpc),

H = Hubble's constant (km/s/Mpc) = 73.8 km/sec

d = v ÷ H

We use the velocities calculated in B) above

For galaxy 1:

v = -1.55 x $10^{3}$ km/s

d = -1.55 x $10^{3}$ ÷ 73.8

d = -21 Mpc

For galaxy 2:

v = -5.12 x $10^{3}$ km/s

d = -5.12 x $10^{3}$ ÷ 73.8

d = -69.4 Mpc

For galaxy 3:

v = -12.03 x $10^{3}$ km/s

d = -12.03 x $10^{3}$ ÷ 73.8

d = -163 Mpc

N.B: distance cannot be a negative value

4 0

3 years ago

3.

lutik1710 [3]

The answer is narrow coastal plains

5 0

3 years ago

Read 2 more answers

What is meant by meridional circulation in the atmosphere?

Tamiku [17]

The correct answer is D. Air moving along lines of constant longitude

Explanation:

In geography, the word meridian refers to an imaginary line that connects the North pole and the South pole, this includes the main meridian called Prime Meridian as well as multiple longitude lines that determine East and West.

On the other hand, the meridional circulation refers to a natural phenomenon in which air and air masses move from North to South and vice-versa following longitude lines or the imaginary lines that divide the planet vertically. Additionally, the meridional circulation affects climate especially in terms of extreme weather. According to this, the meridional circulation means "Air moving along lines of constant longitude".

7 0

2 years ago

So my reaching earth is most affected by the law of

wel

The law of conservation

7 0

3 years ago

• What were some of the outcomes and consequences of the Protestant Reformation in Europe?

RideAnS [48]

Answer and Explanation:

A few of the results and outcomes of the Protestant Reformation in Europe are as follows:-

The Protestant Reformation made the Roman Catholic Church start its own change.

The Protestant Reformation made formality and community gatherings open to lay people.
The Protestant Reformation moved otherworldly and religious power to Scripture.
The Protestant Reformation pushed the spread of literacy over the mainland.
The Protestant Reformation uncovered significant debasement in chapel authority. and so forth

Results of the Protestant Reformation in Europe:-

Numerous occasions prompted the protestant transformation.
Pastorate misuse made individuals start scrutinizing the Catholic Church.
The narrow minded, unreasonable want and shocking existences of the ministry had made a separation among them and the workers.
The destitute individuals were affected by compositions and proclaiming of Luther to guarantee or request monetary changes through outfitted disobedience in the German states.
The enormous issue or unsettling influence that caused Reformation had persevering for an all-inclusive effect on European governmental issues.
After the shorter time frame Catholic Church regarded Martin Luther a (protestant Europe) moved toward becoming splited, so to speak and so forth.

Martin Luther's convictions and thoughts:-

He proposed that the Bible alone will serve as the guidance for Christians and that German Christians didn't have to tune in to the Pope in Italy and therefore make good on regulatory expenses, i.e., taxes.
Luther proposed a ministry everything being equal (individuals could converse with God legitimately) in light of the fact that he was not concurred with the possibility that clerics were expected to come or go close to God for the benefit of the individuals.
As Church was utilizing or rehearsing Latin language, Luther requested that the congregation should utilize the regular language of the individuals. Accordingly, Luther made an interpretation of the whole Bible into this European language.

8 0

3 years ago